From a41db06404670b18c7a0809009d611a4bc807e90 Mon Sep 17 00:00:00 2001
From: Eddy Pedroni <epedroni@pm.me>
Date: Sun, 25 Oct 2026 09:23:27 +0100
Subject: Initial commit, firmware skeleton

---
 firmware/src/display.hpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 firmware/src/display.hpp

(limited to 'firmware/src/display.hpp')

diff --git a/firmware/src/display.hpp b/firmware/src/display.hpp
new file mode 100644
index 0000000..e2dabf2
--- /dev/null
+++ b/firmware/src/display.hpp
@@ -0,0 +1,22 @@
+#include "hardware/i2c.h"
+
+namespace display
+{
+
+// I2C0 on GPIO8 (SDA) and GPIO9 (SCL) running at 400KHz
+constexpr auto I2C_PORT = i2c0;
+constexpr unsigned I2C_SDA = 8;
+constexpr unsigned I2C_SCL = 9;
+
+void
+init()
+{
+    i2c_init(I2C_PORT, 400*1000);
+    
+    gpio_set_function(I2C_SDA, GPIO_FUNC_I2C);
+    gpio_set_function(I2C_SCL, GPIO_FUNC_I2C);
+    gpio_pull_up(I2C_SDA);
+    gpio_pull_up(I2C_SCL);
+}
+
+}
-- 
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